John G. Hemry (Jack Campbell) and David Weber are two acclaimed writers of military sci-fi - the Lost Fleet and Honor Harrington series. I reviewed Dauntless here, have worked my way through Fearless, Courageous and Valiant and the rest of the series since, while I read and enjoyed the Honor Harrington novels several years ago. At first glance they seem very similar: both series describe massed battles between large space fleets with naval command structures and ship classes, clashing at relativistic speeds and fighting with missiles and beam weapons. Both feature very charismatic commanders. Both authors share the extraordinary ability to describe a large and complex military action in such a way that even we civvies can follow the action and understand the tactical errors made by the commanders.